Human life has reached the maximum level?

Human lifespan is at the highest level in history, increasing much faster than expected and does not seem to follow genetic rules. That is the result of a study published in the journal Proceedings on October 15 last.

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Just about four generations ago, the average probability of death in many countries (typically Swedish people) still had similarities with their ancestors during the hunting and gathering period. However, medical development, improved sanitation and improved water systems contribute to significantly improving living conditions, reducing mortality to the lowest level within 100 years.

Biologists have conducted experiments to extend the life of worms, fruit flies and mice by selectively breeding or regulating the endocrine system. The results show that the life expectancy that humans achieve within four generations far exceeds the capabilities of laboratory methods.

In this new study, Dr. Oskar Burger at the Max Planck Institute for Demographic Research (Germany) and his colleagues analyzed the previously published mortality data in Sweden, France and Japan on three groups. : modern people, gatherers and gatherers of wild chimpanzees.

Many experts identify human species now reaching the maximum age.

Humans are estimated to have gone through 8,000 generations, but only in the last 4 generations, the mortality rate has dropped to a low level as it is today, while the hunter-gatherers and chimpanzees have average life expectancy. together. Besides, the study also showed that at the age of adolescents (above 15 years old), the risk of death during the hunting and gathering period is 100 times higher than today.

In addition to genetic factors, some other conditions such as the development of medical equipment, improved nutrition, advanced education . also contributed significantly to prolonging the average age for people.

'With what happens, we cannot predict changes in the next four generations , ' said Burger.

However, many experts identify humanity as capable of reaching the maximum age.'Currently, the probability of death is reaching the lowest value in history, the life expectancy from there can not increase more,' said Caleb Finch, senior professor of neurology at the University of Southern California. Furthermore, Finch also argued that increasing environmental degradation, climate change and ozone pollution, combined with increasing obesity, heart disease and cancer are leading us into a recession phase. movement.

Reference: Livescience